By the way, there is nothing exactly generic about DNG specification. DNG is not a format, strictly speaking, it is a container, based on TIFF. DNG allows for many different formats inside it (including some that are rather far from a raw as it comes from a camera), and if you try opening a floating point or a linear DNG in different applications, you may see that not everything is as nice with DNG support as one might hope.
Nothing exactly generic about
To convert to DNG, one can use a free Adobe DNG converter, https://helpx.adobe.com/photoshop/using/adobe-dng-converter.html
By the way, there is nothing exactly generic about DNG specification. DNG is not a format, strictly speaking, it is a container, based on TIFF. DNG allows for many different formats inside it (including some that are rather far from a raw as it comes from a camera), and if you try opening a floating point or a linear DNG in different applications, you may see that not everything is as nice with DNG support as one might hope.